Switching to a certain language yields error

Please force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report ([minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder]) here.

That would be the right thong to do, but unfortunatley my F3 key is tied to a system function, and thus is not reconized by minecraft.

Cannot reproduce.